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The effect of daily duration of light an...

The effect of daily duration of light and dark periods on the growth and development of plants, especially flowering, is called

A

thermotaxism

B

thermotropism

C

phototropism

D

photoperiodism

Text Solution

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The correct Answer is:
D
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NCERT FINGERTIPS-PLANT GROWTH AND DEVELOPMENT-Plant Growth And Development
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  2. Phenomenon of photoperidodism was first discovered by in the "Maryland...

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  3. The effect of daily duration of light and dark periods on the growth a...

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  4. Photoperiod stimulus is perceived bypigment.

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  5. Low temperature treatment to speed up the process of flowering is refe...

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  6. The stimulus of cold treatment (vernalisation) is perceived by

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  7. Cabbage is a biennial plant which produces flowers in second year of g...

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  8. Vernalisation can often be replaced by

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  9. Which of the following inhibitors causes seed dormancy?

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  10. Select the incorrect statement.

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  11. Dormancy of seeds is broken by red light in

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  12. In Xanthium and many grasses seed dormancy occurs due to

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  13. A process of breaking seed dormancy of some plants in which seeds are ...

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  14. A young dicot seedling (e.g., soyabean) is laid horizontally on a surf...

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  15. Given figure shows the effect of interruption of skotoperiod (dark per...

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  16. A farmer while graphe plants in his garden, observes the following: ...

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  17. Select the correct option regarding the phytohormone to which the give...

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  18. Seed germination is the sprouting of a seed and growth of the embryo p...

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  19. Charles Darwin and his son, Francis experimented with phototropism of ...

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  20. Plant hormones play a role in regulating seed germination. The graph s...

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